21258992

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{1409}}^1$

素因数の和:1481

約数の個数: 40

約数和(自身を含む): 44059680

約数和(自身を除く): 22800688

約数列:

[1, 2, 4, 8, 16, 23, 41, 46, 82, 92, 164, 184, 328, 368, 656, 943, 1409, 1886, 2818, 3772, 5636, 7544, 11272, 15088, 22544, 32407, 57769, 64814, 115538, 129628, 231076, 259256, 462152, 518512, 924304, 1328687, 2657374, 5314748, 10629496, 21258992]

約数ペア:

[(1, 21258992), (2, 10629496), (4, 5314748), (8, 2657374), (16, 1328687), (23, 924304), (41, 518512), (46, 462152), (82, 259256), (92, 231076), (164, 129628), (184, 115538), (328, 64814), (368, 57769), (656, 32407), (943, 22544), (1409, 15088), (1886, 11272), (2818, 7544), (3772, 5636)]